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  #1  
Old June 3rd, 2023, 16:40
JeffDB JeffDB is offline
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Running just fine then dies at idle on street

Had my 98 XJ die on me on street today. Engine had been running smooth with no problems starting. The only issue I noticed is my temp gauge would get just a little above 210 but no higher and the oil pressure gauge would furiously from 40 psi at idle down to 20 psi and fluctuate back and forth. It only did it once engine was at operating temp. Suspect itís oil send unit. After it died it would crank over but not start. If the send unit failed would it cause engine to die and not start?
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Old June 4th, 2023, 07:28
lawsoncl lawsoncl is offline
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Re: Running just fine then dies at idle on street

The oil pressure sensor failing is pretty common, but won't stop it from starting. The most likely culprit is the crank position sensor. Have you checked for any codes?
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Old June 4th, 2023, 11:41
Unclewolverine Unclewolverine is offline
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Re: Running just fine then dies at idle on street

Oil pressure sensor only runs the gauge, no effect on engine running. X2 on the cps as the main culprit. Could also be tps or the fuel pump went out.
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  #4  
Old June 4th, 2023, 14:33
JeffDB JeffDB is offline
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Re: Running just fine then dies at idle on street

Quote:
Originally Posted by lawsoncl View Post
The oil pressure sensor failing is pretty common, but won't stop it from starting. The most likely culprit is the crank position sensor. Have you checked for any codes?
Check engine light didnít come on at all. I had it towed to my tech buddies shop so heíll probably do that this week when he gets to it.
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  #5  
Old June 5th, 2023, 08:49
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90xj06 90xj06 is offline
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Re: Running just fine then dies at idle on street

does the rpm gauge jump up during cranking? it should go to about 300 rpms. if it doesn't move I would suspect Crank sensor or wiring.
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